How Should a Nurse Researcher Expect a Sample to Differ

How should a nurse researcher expect a sample to differ from a population?

A) A sample can mean objects or events, whereas population refers to individuals or groups of people.
B) A population has a broad set of defining characteristics, and a sample has a narrow set of defining characteristics.
C) A population is a representative segment of a defined sample.
D) A sample is a representative segment of a defined population.